1 /* SPDX-License-Identifier: MIT */
2 /*
3  * Copyright © 2020 Intel Corporation
4  */
5 
6 #ifndef _I915_PXP_TEE_INTERFACE_H_
7 #define _I915_PXP_TEE_INTERFACE_H_
8 
9 #include <linux/mutex.h>
10 #include <linux/device.h>
11 
12 /**
13  * struct i915_pxp_component_ops - ops for PXP services.
14  * @owner: Module providing the ops
15  * @send: sends data to PXP
16  * @receive: receives data from PXP
17  */
18 struct i915_pxp_component_ops {
19 	/**
20 	 * @owner: owner of the module provding the ops
21 	 */
22 	struct module *owner;
23 
24 	int (*send)(struct device *dev, const void *message, size_t size);
25 	int (*recv)(struct device *dev, void *buffer, size_t size);
26 };
27 
28 /**
29  * struct i915_pxp_component - Used for communication between i915 and TEE
30  * drivers for the PXP services
31  * @tee_dev: device that provide the PXP service from TEE Bus.
32  * @pxp_ops: Ops implemented by TEE driver, used by i915 driver.
33  */
34 struct i915_pxp_component {
35 	struct device *tee_dev;
36 	const struct i915_pxp_component_ops *ops;
37 
38 	/* To protect the above members. */
39 	struct mutex mutex;
40 };
41 
42 #endif /* _I915_TEE_PXP_INTERFACE_H_ */
43